PostConstructionTests.java

/**
 * Copyright (C) 2010 Daniel Manzke <daniel.manzke@googlemail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package de.devsurf.injection.guice.integrations.test.guicyfruit.post;

import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

import javax.annotation.PostConstruct;

import junit.framework.Assert;

import org.junit.Test;

import com.google.inject.Guice;
import com.google.inject.Injector;

import de.devsurf.injection.guice.annotations.Bind;
import de.devsurf.injection.guice.integrations.guicyfruit.JSR250Module;
import de.devsurf.injection.guice.scanner.PackageFilter;
import de.devsurf.injection.guice.scanner.StartupModule;
import de.devsurf.injection.guice.scanner.asm.ASMClasspathScanner;

public class PostConstructionTests {
	private static ThreadLocal<Boolean> called = new ThreadLocal<Boolean>();

	@Test
	public void createDynamicModule() {
		StartupModule startup = StartupModule.create(ASMClasspathScanner.class,
			PackageFilter.create(PostConstructionTests.class), PackageFilter.create(JSR250Module.class));

		Injector injector = Guice.createInjector(startup);
		assertNotNull(injector);
	}

	@Test
	public void createInheritedInterceptor() {
		called.set(false);

		StartupModule startup = StartupModule.create(ASMClasspathScanner.class,
			PackageFilter.create(PostConstructionTests.class), PackageFilter.create(JSR250Module.class));

		Injector injector = Guice.createInjector(startup);
		assertNotNull(injector);

		TestInterface instance = injector.getInstance(TestInterface.class);
		instance.sayHello();

		assertTrue("@PostConstruction was not evaluated and Method was not invoked", called.get());
	}

	public static interface TestInterface {
		String sayHello();
	}

	@Bind
	public static class TestImplementation implements TestInterface {
		@PostConstruct
		public void inform() {
			called.set(true);
		}

		public void cancel() {
			Assert.fail("Should not be invoked.");
		}

		@Override
		public String sayHello() {
			return "Good Morning!";
		}

	}
}